ci(deps): bump useblacksmith/build-push-action from 1 to 2

Bumps [useblacksmith/build-push-action](https://github.com/useblacksmith/build-push-action) from 1 to 2.
- [Release notes](https://github.com/useblacksmith/build-push-action/releases)
- [Commits](useblacksmith/build-push-action@v1...v2)

---
updated-dependencies:
- dependency-name: useblacksmith/build-push-action
  dependency-version: '2'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/docker-build-push-multi-registry.yml

@@ -128,7 +128,7 @@ jobs:
 
       - name: Build and push by digest
         id: build
-        uses: useblacksmith/build-push-action@v1
+        uses: useblacksmith/build-push-action@v2
         with:
           context: ${{ inputs.build-context }}
           file: ${{ inputs.build-file }}